Iberia Parish, LA Shrink-Swell Risk

What Iberia Parish, LA's soil means for a foundation

High

USDA's SSURGO data puts Iberia Parish, LA's soil at "High" shrink-swell potential, an area-weighted linear extensibility of 7.01% across 37.6% of the county's surveyed land. This is enough movement to matter: a standard footing can hold up here, but usually only with real moisture management, not by default.

This is a county figure, not a lot figure

USDA's survey covers the whole of Iberia Parish, LA at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Iberia Parish will actually do.

Report cost vs. repair cost

With Iberia Parish, LA rating "High", the gap between finding out early and finding out late is the whole decision. The report ($1,000-$5,000) is what tells you whether Iberia Parish's county-level reading applies to your lot; the repair ($5,000-$15,000) is what it costs if you skip that and find out from the cracks instead.

How Iberia Parish, LA compares

Nationally, Iberia Parish, LA is the 77-most-constrained of 3,085 rated counties for shrink-swell soil. Within Louisiana alone it ranks 25 of 64. The county spans 575 square miles, home to 67,540 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Butler County, NE and Caldwell County, KY are worth a look for comparison.

How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained

More of Louisiana

Every county in Louisiana is on this site, including Madison Parish, LA and Lincoln Parish, LA. The full underlying dataset is downloadable directly, one row per county.